Enterasys Networks 700 - Manual (Page 167)

Accessing the ATM Connections Window 6-3
ATM Configuration
Settings
The Settings portion of the window contains a list box which displays information
about each of the currently configured PVCs, as well as the fields used to
configure new connections:
I/F The device interface on which the PVC was configured.
VPI Displays the Virtual Path Identifier assigned to the
connection; current versions of DELHA-UA firmware
allow values from 0-3. Virtual Path Identifiers are used to
group virtual connections, allowing for channel trunking
between ATM switches. Each VPI can be configured to
carry many different channels (designated by VCIs)
between two points.
VCI Displays the Virtual Channel Identifier assigned to the
connection; allowable values are 0-1023 for each VPI. Each
assigned VCI must be unique within its defined VPI: for
example, you can assign a VCI of 14 as many as four
times: once with a VPI of 0, once with a VPI of 1, and so
on. Remember, it is the combined VPI and VCI
designations assigned to a channel that creates the
grouping of virtual connections.
Encapsulation Type Displays the method used to encapsulate LAN packets
on the selected circuit. Current versions of DELHA-UA
firmware use 802.3 VC-based multiplexing for bridging
protocols (designated VC MUX 802.3 Bridged); future
versions will add support for ATM Forum LAN
Emulation. You may also see some connections assigned
a type of “other”; these are default connections that
cannot be modified or deleted.
Status Displays the current administrative status of the
connection: enabled or disabled. In current versions of
firmware, all connections are enabled by default, and
cannot be disabled.
UpTime The length of time the selected connection has been
enabled.
Add
Selecting the Add button either adds a new connection or modifies an existing
one, using the parameters entered in the fields below the list box. A confirmation
window will appear for both additions and modifications.
Delete
Selecting the Delete button deletes the selected connection; a confirmation
window requires that you confirm the deletion.